Gear-planer.



w. F. ZIMMERMANN.

GEAR PLANER.

APPLICATIO! FILED FEB. 3, I917.

Patented Nov. 12, 1918.

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GEAR PLANER.

APPLICATiON FILED FEB. 3, 19:1.

ml MW 5 v; T m 4 H M m 3. N h w I UNITED STATES PATENT OFFICE.

WILLIAM F. ZIMMERMANN, OF NEWARK, NEW JERSEY, ASSIGNOIB. '10 GOULD &EBER- EIABDT, 0F NEWARK, NEW JERSEY, A COBPORATION-OF NEW JERSEY.

GEAR-PLANEB.

Specification of Letters Patent. v Patented Nov. 1918.

Application filed February 3, 1917. Serial No. 146,345.

to apply the principle thereof, so as to distinguish it from otherinventions and to enable any person skilled in the 'art to which itappertains or with which it is most nearly connected to make, construct,and use the same.

This invention relates primarily to a gear planing machine and moreparticularly to a machine adapted to operate upon a plurality of blanks.

This invention contemplates as its primary object, a means for lockingor securely holding the work spindles during the cutting operation.

Another object is to provide an adjusting means for said spindle lockingmechanism.

Other objects will be apparent from, and are incorporated in the annexeddrawings and in the following description, which sets forth in detail,certain contrivances embodying means constituting however, but one ofthe various mechanical forms in which the principle of the invention maybe used.

The novelty of the invention will be readily understood from thedrawings, which show a construction for practising the invention in itspreferred form, and from the following description thereof, theinvention being more specifically pointed out and distinctly claimed inthe claims annexed to said description.

In the drawings:

Figure 1 is a fragmentary side elevation of a gear planing machine. I

Fig. 2 is a diagrammatic view of the gearmg.

Fig. 3 is a sectional view atm m, of Figs. 1, 4 and 9.

Fig. '4 is a side elevation of Fig. 3 showing the casing removed toillustrate the interior. v

Fig. 5 is a sectional view at a a, of Fig.3.

Fig. 6 is a sectional view at g 3/1 of Figs.

1, 4 and 9 and illustrates the index driving mechanism.

Fig. 7 is an isometric view of the locking cam.

Fig. 8 is a development of the locking cam.

Fig. 9 is aside elevation of the intermittent indexing mechanism.

Fig. 10 is a front elevation illustrating the plurality of cuttingtools.

Referring particularly to Fig. 1, the crank gear 1 is rotatably mountedin the frame 2'. A crank or lever 3 is suitably pivoted to the ram 4,and is hinged at its other end in any Well known manner. An oscillatingmovement is imparted to the crank 3 from the crank gear 1, in thecustomary way employed in similar machines. Y

The ram 4 is provided with a tool slide 5 having mounted therein aplurality of cutting tools 6. A plurality of work spindles 7, is mountedin the forward part of the frame 2, to which the bevel gears8 to be cut,are secured. The helicoidal gears 9, intermeshing with each other, arefastened to said work spindles 7, and any of their number may be engagedby the helicoidal gears 10. The helicoidal gears 10 are secured to androtatable with the index shaft 11, which shaft is connected to theintermittent shaft 12 by suitable change gears 13. The lantern gear 14Lis secured to said index shaft 12 and is intermittently operated by atwo-lobed cam 15 secured to the bevel gear 16, which gear is connectedto and rotated by crank gear 1 through the bevel gears 17, 18 and 19.

Motion can be transmitted to the pulley 20, from any suitable source, torotate the crank gear 1 through the crank pinion 21, and then throughthe bevel gears 19, 18, 17 and 16 to the double-lobed cam 15, which isso geared that for each revolution of the crank gear 1, the two-lobedcam 15 will make a half-revolution to engage one of the lobes with oneof the pins 22 of the lantern gear to impart a definite predeterminedangular motion, to said lantern gear 14, which angular motion istransmitted to the work spindle 7 by means of the change gears 13 andthe helicoidal gears 10 and 9. The locking plate 23 is also secured tothe bevel gear 16 adjacent to the double-lobed cam 15, and is soarranged that when the double:

lobed cam is disengaged from the lantern gear, the periphery 24 of saidplate 23, w ll .be in contact with the projection of the pin rotatedduring the cutting stroke.

The mechanism just described is so arranged that during therearwardstroke or the cutting tools 6, the indexing mechanism is .setin'operation and the spindles 7 are each indexed for one tooth and theindexing mechanism is locked at each forward stroke of the cuttingtools." Any suitable feeding mechanism can be applied for the purpose ofproperly feeding the tools.

The looking or holding mechanism for the work spindles will now bedescribed.

The cam 27 is rotated by the bevel gear 16 through the key 28 and isprovided with a groove 33 similar to the development shown in Fig. 8.The lever 29 which is pivoted on the shaft 30 is provided with an arm 31in which suitable pins or rollers 32 are arranged to engage with and beoperated by the cam groove 33. Other arms 3% of the said lever 29 areprovided with suitable shoes 35 which are in contact with the peripheralgroove 36 in the locking member 37, the latter being suitably keyed tothe index shaft 11. A clamp nut 38 is threaded to the shaft 11 and isarranged to adjust the locking member 37 endwise upon said shaft 11. Aconical depression 39 is provided in said locking member 37 to coperatewith the conically shaped member 40. Two nuts d1 are so arranged thatsaid conically shaped member 40 can be adjusted endwise, and a smallscrew 42 prevents rotation.

The operation of the locking mechanism will now be described.

The cam 27 is rotated by the gear 16 and oscillates the lever 29 twiceduring each revolution or once for each indexing movement. Thisoscillation of the lever 29, is so arranged that it takes placeimmediately after the lantern gear has come to rest, to move the shaft11 in the direction of the arrow asshown in Fig. 2. The end motionimparted to the shaft 11 tends to rotate the helicoidal gears 9 in thedirections shown by the arrows. It will be noticed that the two centergears have rotary motion 'in an opposite direction thereby formingsubstantial lock for the work spindles. The locking effeet can be variedby adjusting the clamp nut 38 to alter the relative positions of thework spindles with the locking cam.

The conical member 40 is so adjustedthat when the work spindles arelocked, the locking member 37 and conical member 40 are in engagement toprevent any rotary motion to the shaft 11.

masses The locking device as described provides substantially a positivelock which is adjustable to meet thevarying conditions of wear'andfreedom between the parts.

This device will lock the work spindles in any angular position, whichis not possible with a positive locking device.

The drawings illustrate an even number of work spindles and it will benoticed that both the end helicoidal driving gears 10 are moved endwiseto efiect a' locking of the spindles.

Should the construction be such that an odd number of spindles is used,then at least one or an odd number of driving gears must be movedendwise to get the locking efiect.

In either of the foregoing constructions it is possible to move only onedriving gear to get the locking eflect but the locking will not be doneso quickly, and a greater end movement is necessary than is requiredwhen more than one gear is moved.

Having described my invention. I claim as new and desire to secure byLetters Patent:

1. The combination with a plurality of spindles, of means tointermittently rotate said spindles, and means to set up an opposeddirection of rotation in said spindles to lock same between theintermittent rotations.

2. The combination with a plurality of spindles, of gears secured toeach of said spindles and intermeshing, means to intermittently rotatesaid gears, and means to roll said ears in opposed directions to locksaid spindles between the intermittent rotations.

3. The combination with a plurality of spindles, of driven gears securedto said spindles and 'intermeshing, driving gears meshing with saiddriven gears, means to intermittently rotate said driving gears, andmeans to move said driving gears axially to set up an opposed directionof rotation in said spindles to lock same.

4. The combination with a plurality of spindles, of driven gears securedto said spindles and intermeshing, driving gears meshing with saiddriven gears, a shaft spindles, means to intermittently rotate saidshaft, and means to move said shaft axially between the intermittentrotations.

6. The combination with a plurality of spindles, of a shaft connected tosaid spindles, a second shaft arranged to rotate con tinuously, meansoperated by said second shaft to intermittently rotate said. firstconnected to said driving gears, means to mentioned shaft, and othermeans operated by said second shaft to move said first mentioned shaftaxially during the non-rotatlve perlod.

7. The combination with a plurahty of spindles, of a shaft connected tosaid spindles, a second shaft rotating contin-- uously, means operatedby said secondshaft to intermittently rotate said first mentioned shaft,a cam connected to and rotating with said second shaft, a locking membersecured to said first mentioned shaft, and a leverconnectin said cam andlocking member to periodica y move said first mentioned shaft axiallydurin the non-rotative period.

9. The com ination with a plurality of spindles, of a shaft connected tosaid spindles, means to intermittently rotate said shaft, and a cam toperiodically move said shaft axially during the non-rotative period.

10. The combination with a plurality of spindles, of a shaft connectedto said spindles, means to intermittently rotate said shaft, a boxingmember rotativelv secured to said shaft, a cam to periodicall move saidlocking member and shaft axia l and means to adjust said locking memberand cam relatively to each other.

11. The combination with a plurality of spindles, of a shaft connectedto said spindles, means to intermittently rotate said shaft, a cam toperiodically move said shaft axially, and an abutment to limit the axialmovement of said shaft.

12. The combination with a plurality of spindles, of a shaft connectedto said spindles, means to intermittently rotate said shaft, a lockingmember rotatively secured to said shaft, a, stationary member, and meansto move said locking member and shaft axially to cooperate with saidstatiom ary member to prevent rotation of said shaft and to limit theaxial motion.

13. The combination with a plurality of spindles, of a shaft connectedto said spindles, means to intermittently rotate said s aft, a lockingmember rotatively secured to said shaft, a stationary member, means tomovesaid locking member and shaft axially to cooperate with said"stationary member to prevent rotation of said shaft, and'means to adjustsaid stationary member relatively tosaid locking member.

14.. The combination with a plurality of spindles, of a shaft connectedto said spindles, means to intermittently rotate said s aft, a lockingmember rotatively secured to salo' shaft, a cam to periodicallv movesaid locking member and shaft axially, a stationary member to cooperatewith said locking member to limit the axial movement and preventrotation, means to adjust said locking member and cam relatively to eachother, and means to adjust said stationary and locking membersrelatively to each other.

Signed this 2nd day of February, 1917.

WILLIAM F. ZIMMERMANN.

